That’s when it can feel imperative to have something much stronger, like anespresso.

But java drinkers might be wondering why espresso comes in such a small, but charming, little cup.

The answer might surprise you.

espresso

Coffee, on the other hand, has roughly 12 to 16 milligrams of caffeine per ounce.

How does this explain the jolt we feel when we take a shot of espresso?

And the smaller cup means we can consume the caffeine much more quickly.

espresso

The truth is, overdoing it on caffeine is just not healthy for you.

Possible side effects of too much caffeine include headache, insomnia, and irritability.